利用废弃聚酯面料降解产物制备水溶性聚酯的研究  

Water-soluble polyester(WSP)based on chemical recycled waste poly(ethylene terephthalate)

作　　者：鲁静[1] 李梦娟[1,2] 李思明[1] 葛明桥[1,2] Lu Jing Li Mengjuan Li Siming Ge Mingqiao(College of Textile ＆ Clothing,Jiangnan University,Wuxi 214122 Key Laboratory of Eco-Textiles, Ministry of Education （Jiangnan University）,Wuxi 214122)

机构地区：[1]江南大学纺织服装学院,无锡214122 [2]生态纺织教育部重点实验室(江南大学),无锡214122

出　　处：《化工新型材料》2016年第12期229-231,共3页New Chemical Materials

基　　金：国家重点研发计划重点基础材料技术提升与产业化重点专项项目(2016YFB0302901);江苏高校优势学科建设工程资助项目(PAPD);江苏高校品牌专业建设工程资助项目(PPZY2015B147);生态纺织教育部重点实验室(江南大学)资助项目(KLET1501);国家级大学生创新创业训练计划(201610295029)

摘　　要：采用乙二醇醇解法降解4种不同颜色的聚酯面料,得到4种不同颜色的晶体产物。对降解产物进行傅里叶红外光谱(FT-IR)、核磁共振氢谱(1 H-NMR)和示差扫描量热(DSC)等测试分析,发现不同颜色的降解产物分子结构相同,并证实了降解产物为对苯二甲酸乙二醇酯(BHET)。将降解产物BHET作为主要原料,引入水溶性基团间苯二甲酸-5-磺酸钠(SIPA)与柔性基团二乙二醇(DEG),经由酯化、酯交换、熔融缩聚等反应,制备了水溶性聚酯(WSP)。分别改变SIPA及DEG的用量,发现随着SIPA及DEG用量的增加,WSP水溶性增强,DEG用量对WSP分子结构及玻璃化温度(Tg)并无明显影响。Polyester fabrics with different colors were depolymerized by ethylene glycol and transformed into crys- tals with different colors. The glycolysis products were identified by FT-IR,1 H-NMR and DSC. It was found that the prod- ucts of different colored fabrics had same functional groups which demonstrated the glycolysis products were bis （2- hydroxyethyl） terephthalate （BHET）. Using BHET as the main reactant,water-soluble polyester （WSP） was synthesized through esterification, transesterification and polycondensation. The water-soluble units （SIPA） and pliant units （DEG） were incorporated into WSP in order to improve the water-solubility and flexibility of WSP. The molecular structure and glass transition temperature （Tg） of WSP changed slightly while the dosage of DEG increased.

关 键 词：废弃聚酯面料 水溶性聚酯 对苯二甲酸乙二醇酯 水溶性 

分 类 号：X705[环境科学与工程—环境工程] TS103.846[轻工技术与工程—纺织工程]